I have one question like do we need to add interface input for GSM as well into TCP IP Adapter Interface Input List like WiFi STA, WiFi Ap and Ethernet Interface if we plan to add GSM Interface as well with ESP32?

To make you an idea, I'm printing debug messages in each of the conditionals 'if' and when GSM gets stuck downloading, can't see more messages there.

Thanks in advance

EDIT: so in the library there's this comment (refering to Dropping bad FCS)/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
It's true that UART lines from ESP32 to module are relatively large (10 cm)
Gsm module works at 115200 by default, so I changed to 57600 still having bad FCS, then changed to 38400 and it worked
Not sure if the problem is really a hw issue or just the baudrate was too fast that internal libraries couldnt take that speed.

Who is online

About Us

Espressif Systems is a fabless semiconductor company providing cutting-edge low power WiFi SoCs and wireless solutions for wireless communications and Internet of Things applications. ESP8266EX and ESP32 are some of our products.